Ministry of Agriculture

About: Ministry of Agriculture is a government organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Chemistry & Salmonella. The organization has 1153 authors who have published 1189 publications receiving 14442 citations.

Utilização do milheto (Pennisetum glaucum (L.) R. Brown) grão na alimentação de suínos na fase inicial (15-30kg de peso vivo)

Abstract: The objective of this study was to evaluate the pearl millet (Pennisetum glaucum (L.) R. Brown) utilization on feeding of initial pigs (15-30kg of body weight). A performance trial was conducted by using 48 crossbred pigs (a half barrows and a half females) with initial weight of 14.93 + 2.01kg with the use of IAPAR-IA98301 species of pearl millet (DM 90.61%; CP 11.64%; Ca 0.05%; P 0.29% and 3,182 kcal DE kg-1). A randomized blocks designwas used, with four treatments (0; 20; 40 and 60% of pearl millet inclusion), with six repetitions and two animals per experimental unit. The pearl millet inclusion on starting pigs diets did not influence on daily feed intake, average daily gain, feed:gain ratio and cost in diet per kilogram of pig produced during the initial phase. The results, suggest that the pearl millet IAPAR-IA98301 can be included in starting pig diets until 60%.

Determinação de aditivos, aldeídos furânicos, açúcares e cafeína em bebidas por cromatografia líquida de alta eficiência: validação de metodologias

Abstract: In this work methodologies chromatographic have been evaluated and validated for the determination of caffeine, furfural, 5-HMF, saccharin, sodium benzoate glucose, fructose, acid citric and acid ascorbic in different food products of Ceara State, Brazil. The study has been evidenced that 66% of the cajuinas, present low quality because of the process of heating, and 12% of the soft drinks presented content of sodium benzoate above the limit tolerated by Brazilian legislation and 29% of the soft drinks illegal saccharin addition. The methodologies were validated in function of the precision, experimental recovery, linearity of the analytical curves, limit of detection and quantification for each compound studied. The precision (R.S.D%) of the determination of each compound varied of 2.85 to 8.35 % and recovery was between 95,1 to 105,5 %. The linearity of the analytical curves were satisfactory with coefficients of correlation greater than 0.990. The limit of detection and quantification of each compound were obtained in level of µg/L.

Beiträge zur organischen Tüpfelanalyse

Abstract: Ausgehend von Uberlegungen und Erfahrungen der Chemie der spezifischen, selektiven und empfindlichen Reaktionen wurden ausgearbeitet: 1. Nachweis von Anthrachinon-Sulfosauren, beruhend auf der Synthese von Polyhydroxyanthrachinonen. 2. Nachweis sekundarer Alkohole, beruhend auf Redoxreaktionen mit geschmolzenem Schwefel. 3. Nachweis von Bernsteinsaure und Succinimid, beruhend auf der Bildung von Pyrrol durch Zinkstaubdestillation in Gegenwart von Ammoniumchlorid. 4. Nachweis von 1,2-Diketonen, beruhend auf der Benzilsaure-Umlagerung. 5. Nachweis vonα-Alanin (Unterscheidung vonβ-Alanin), beruhend auf der Bildung von Acetaldehyd. 6. Nachweis von Chloranil (Unterscheidung von Bromanil), beruhend auf dem Verhalten zu Pyrrol. 7. Nachweis von Naphthalin, beruhend auf der Bildung einer farbigen Additionsverbindung mit Chloranil.